Coz colonialism never went away - Iraq, Afghanistan, the CIA overthrow of multiple elected governments, the French yoke over Africa, the Hague invasion act, etc.
As OP points out you can boycott Hacker News too if you want to take a principled stance on any group tangenially linked to colonialism.
To be fair, one can take a principled stance based on the nexus to the bad thing and the practical effects. It’s pretty undeniable that Russian invasion of Ukraine and the context around it makes it the worst active example of colonialism.
Not even close. The Israeli genocide is the worst active example of modern colonial behavior. It mirrors very closely the Nazi genocide both in intent (i.e. ethnic cleansing of the untermensch) and actions (trying to dump the untermensch in africa first and then graduating to genocide).
As OP points out you can boycott Hacker News too if you want to take a principled stance on any group tangenially linked to colonialism.